A day after a failed North Korean missile test, U.S. President Donald Trump had a message Monday for the North’s ruler: ‘Gotta behave.” At the same time, Vice President Mike Pence warned at the Korean Demilitarized Zone that America’s “era of strategic patience is over.”

Keeping up the verbal volleying, North Korea’s deputy U.N. ambassador accused the United States of turning the Korean peninsula into “the world’s biggest hotspot” and creating “a dangerous situation in which a thermonuclear war may break out at any moment.”

Pence’s visit to the tense DMZ dividing North and South Korea came at the start of a 10-day trip to Asia and underscored U.S. commitment. It allowed the vice president to gaze at North Korean soldiers afar and stare directly across a border marked by razor wire. (Read more from “Trump Warns North Korea: ‘Gotta Behave'” HERE)